CVE-2021-23177

An improper link resolution flaw while extracting an archive can lead to changing the access control list (ACL) of the target of the link. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to change the ACL of a file on the system and gain more privileges.
Link Following
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
redhatCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 11%
VendorProductVersion
libarchivelibarchive
𝑥
< 3.5.2
redhatenterprise_linux
8.0
redhatenterprise_linux_eus
8.6
redhatenterprise_linux_for_ibm_z_systems
8.0
redhatenterprise_linux_for_ibm_z_systems_eus
8.6
redhatenterprise_linux_for_power_little_endian
8.0
redhatenterprise_linux_for_power_little_endian_eus
8.6
redhatenterprise_linux_server_aus
8.6
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
8.6
redhatenterprise_linux_server_tus
8.6
redhatcodeready_linux_builder
-
debiandebian_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libarchive
bullseye
3.4.3-2+deb11u1
fixed
bookworm
3.6.2-1+deb12u1
fixed
bookworm (security)
3.6.2-1+deb12u1
fixed
trixie
3.7.4-1
fixed
sid
3.7.4-1.1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libarchive
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
Fixed 3.4.3-2ubuntu0.1
released
hirsute
ignored
focal
Fixed 3.4.0-2ubuntu1.1
released
bionic
needed
xenial
needs-triage
trusty
needs-triage